// Copyright 2009-2012 by contributors, MIT License
// vim: ts=4 sts=4 sw=4 expandtab

(function () {
setTimeout(function(){
	webshims.isReady('es5', true);
});
	/**
	 * Brings an environment as close to ECMAScript 5 compliance
	 * as is possible with the facilities of erstwhile engines.
	 *
	 * Annotated ES5: http://es5.github.com/ (specific links below)
	 * ES5 Spec: http://www.ecma-international.org/publications/files/ECMA-ST/Ecma-262.pdf
	 * Required reading: http://javascriptweblog.wordpress.com/2011/12/05/extending-javascript-natives/
	 */

// Shortcut to an often accessed properties, in order to avoid multiple
// dereference that costs universally.
	var ArrayPrototype = Array.prototype;
	var ObjectPrototype = Object.prototype;
	var FunctionPrototype = Function.prototype;
	var StringPrototype = String.prototype;
	var NumberPrototype = Number.prototype;
	var array_slice = ArrayPrototype.slice;
	var array_splice = ArrayPrototype.splice;
	var array_push = ArrayPrototype.push;
	var array_unshift = ArrayPrototype.unshift;
	var call = FunctionPrototype.call;

// Having a toString local variable name breaks in Opera so use _toString.
	var _toString = ObjectPrototype.toString;

	var isFunction = function (val) {
		return ObjectPrototype.toString.call(val) === '[object Function]';
	};
	var isRegex = function (val) {
		return ObjectPrototype.toString.call(val) === '[object RegExp]';
	};
	var isArray = function isArray(obj) {
		return _toString.call(obj) === "[object Array]";
	};
	var isString = function isString(obj) {
		return _toString.call(obj) === "[object String]";
	};
	var isArguments = function isArguments(value) {
		var str = _toString.call(value);
		var isArgs = str === '[object Arguments]';
		if (!isArgs) {
			isArgs = !isArray(value)
			&& value !== null
			&& typeof value === 'object'
			&& typeof value.length === 'number'
			&& value.length >= 0
			&& isFunction(value.callee);
		}
		return isArgs;
	};

	var supportsDescriptors = Object.defineProperty && (function () {
			try {
				Object.defineProperty({}, 'x', {});
				return true;
			} catch (e) { /* this is ES3 */
				return false;
			}
		}());

// Define configurable, writable and non-enumerable props
// if they don't exist.
	var defineProperty;
	if (supportsDescriptors) {
		defineProperty = function (object, name, method, forceAssign) {
			if (!forceAssign && (name in object)) { return; }
			Object.defineProperty(object, name, {
				configurable: true,
				enumerable: false,
				writable: true,
				value: method
			});
		};
	} else {
		defineProperty = function (object, name, method, forceAssign) {
			if (!forceAssign && (name in object)) { return; }
			object[name] = method;
		};
	}
	var defineProperties = function (object, map, forceAssign) {
		for (var name in map) {
			if (ObjectPrototype.hasOwnProperty.call(map, name)) {
				defineProperty(object, name, map[name], forceAssign);
			}
		}
	};

//
// Util
// ======
//

// ES5 9.4
// http://es5.github.com/#x9.4
// http://jsperf.com/to-integer

	function toInteger(n) {
		n = +n;
		if (n !== n) { // isNaN
			n = 0;
		} else if (n !== 0 && n !== (1 / 0) && n !== -(1 / 0)) {
			n = (n > 0 || -1) * Math.floor(Math.abs(n));
		}
		return n;
	}

	function isPrimitive(input) {
		var type = typeof input;
		return (
		input === null ||
		type === "undefined" ||
		type === "boolean" ||
		type === "number" ||
		type === "string"
		);
	}

	function toPrimitive(input) {
		var val, valueOf, toStr;
		if (isPrimitive(input)) {
			return input;
		}
		valueOf = input.valueOf;
		if (isFunction(valueOf)) {
			val = valueOf.call(input);
			if (isPrimitive(val)) {
				return val;
			}
		}
		toStr = input.toString;
		if (isFunction(toStr)) {
			val = toStr.call(input);
			if (isPrimitive(val)) {
				return val;
			}
		}
		throw new TypeError();
	}

// ES5 9.9
// http://es5.github.com/#x9.9
	var toObject = function (o) {
		if (o == null) { // this matches both null and undefined
			throw new TypeError("can't convert " + o + " to object");
		}
		return Object(o);
	};

	var ToUint32 = function ToUint32(x) {
		return x >>> 0;
	};

//
// Function
// ========
//

// ES-5 15.3.4.5
// http://es5.github.com/#x15.3.4.5

	function Empty() {}

	defineProperties(FunctionPrototype, {
		bind: function bind(that) { // .length is 1
			// 1. Let Target be the this value.
			var target = this;
			// 2. If IsCallable(Target) is false, throw a TypeError exception.
			if (!isFunction(target)) {
				throw new TypeError("Function.prototype.bind called on incompatible " + target);
			}
			// 3. Let A be a new (possibly empty) internal list of all of the
			//   argument values provided after thisArg (arg1, arg2 etc), in order.
			// XXX slicedArgs will stand in for "A" if used
			var args = array_slice.call(arguments, 1); // for normal call
			// 4. Let F be a new native ECMAScript object.
			// 11. Set the [[Prototype]] internal property of F to the standard
			//   built-in Function prototype object as specified in 15.3.3.1.
			// 12. Set the [[Call]] internal property of F as described in
			//   15.3.4.5.1.
			// 13. Set the [[Construct]] internal property of F as described in
			//   15.3.4.5.2.
			// 14. Set the [[HasInstance]] internal property of F as described in
			//   15.3.4.5.3.
			var binder = function () {

				if (this instanceof bound) {
					// 15.3.4.5.2 [[Construct]]
					// When the [[Construct]] internal method of a function object,
					// F that was created using the bind function is called with a
					// list of arguments ExtraArgs, the following steps are taken:
					// 1. Let target be the value of F's [[TargetFunction]]
					//   internal property.
					// 2. If target has no [[Construct]] internal method, a
					//   TypeError exception is thrown.
					// 3. Let boundArgs be the value of F's [[BoundArgs]] internal
					//   property.
					// 4. Let args be a new list containing the same values as the
					//   list boundArgs in the same order followed by the same
					//   values as the list ExtraArgs in the same order.
					// 5. Return the result of calling the [[Construct]] internal
					//   method of target providing args as the arguments.

					var result = target.apply(
						this,
						args.concat(array_slice.call(arguments))
					);
					if (Object(result) === result) {
						return result;
					}
					return this;

				} else {
					// 15.3.4.5.1 [[Call]]
					// When the [[Call]] internal method of a function object, F,
					// which was created using the bind function is called with a
					// this value and a list of arguments ExtraArgs, the following
					// steps are taken:
					// 1. Let boundArgs be the value of F's [[BoundArgs]] internal
					//   property.
					// 2. Let boundThis be the value of F's [[BoundThis]] internal
					//   property.
					// 3. Let target be the value of F's [[TargetFunction]] internal
					//   property.
					// 4. Let args be a new list containing the same values as the
					//   list boundArgs in the same order followed by the same
					//   values as the list ExtraArgs in the same order.
					// 5. Return the result of calling the [[Call]] internal method
					//   of target providing boundThis as the this value and
					//   providing args as the arguments.

					// equiv: target.call(this, ...boundArgs, ...args)
					return target.apply(
						that,
						args.concat(array_slice.call(arguments))
					);

				}

			};

			// 15. If the [[Class]] internal property of Target is "Function", then
			//     a. Let L be the length property of Target minus the length of A.
			//     b. Set the length own property of F to either 0 or L, whichever is
			//       larger.
			// 16. Else set the length own property of F to 0.

			var boundLength = Math.max(0, target.length - args.length);

			// 17. Set the attributes of the length own property of F to the values
			//   specified in 15.3.5.1.
			var boundArgs = [];
			for (var i = 0; i < boundLength; i++) {
				boundArgs.push("$" + i);
			}

			// XXX Build a dynamic function with desired amount of arguments is the only
			// way to set the length property of a function.
			// In environments where Content Security Policies enabled (Chrome extensions,
			// for ex.) all use of eval or Function costructor throws an exception.
			// However in all of these environments Function.prototype.bind exists
			// and so this code will never be executed.
			var bound = Function("binder", "return function (" + boundArgs.join(",") + "){return binder.apply(this,arguments)}")(binder);

			if (target.prototype) {
				Empty.prototype = target.prototype;
				bound.prototype = new Empty();
				// Clean up dangling references.
				Empty.prototype = null;
			}

			// TODO
			// 18. Set the [[Extensible]] internal property of F to true.

			// TODO
			// 19. Let thrower be the [[ThrowTypeError]] function Object (13.2.3).
			// 20. Call the [[DefineOwnProperty]] internal method of F with
			//   arguments "caller", PropertyDescriptor {[[Get]]: thrower, [[Set]]:
			//   thrower, [[Enumerable]]: false, [[Configurable]]: false}, and
			//   false.
			// 21. Call the [[DefineOwnProperty]] internal method of F with
			//   arguments "arguments", PropertyDescriptor {[[Get]]: thrower,
			//   [[Set]]: thrower, [[Enumerable]]: false, [[Configurable]]: false},
			//   and false.

			// TODO
			// NOTE Function objects created using Function.prototype.bind do not
			// have a prototype property or the [[Code]], [[FormalParameters]], and
			// [[Scope]] internal properties.
			// XXX can't delete prototype in pure-js.

			// 22. Return F.
			return bound;
		}
	});

// _Please note: Shortcuts are defined after `Function.prototype.bind` as we
// us it in defining shortcuts.
	var owns = call.bind(ObjectPrototype.hasOwnProperty);

// If JS engine supports accessors creating shortcuts.
	var defineGetter;
	var defineSetter;
	var lookupGetter;
	var lookupSetter;
	var supportsAccessors;
	if ((supportsAccessors = owns(ObjectPrototype, "__defineGetter__"))) {
		defineGetter = call.bind(ObjectPrototype.__defineGetter__);
		defineSetter = call.bind(ObjectPrototype.__defineSetter__);
		lookupGetter = call.bind(ObjectPrototype.__lookupGetter__);
		lookupSetter = call.bind(ObjectPrototype.__lookupSetter__);
	}

//
// Array
// =====
//

// ES5 15.4.4.12
// http://es5.github.com/#x15.4.4.12
	var spliceNoopReturnsEmptyArray = (function () {
		var a = [1, 2];
		var result = a.splice();
		return a.length === 2 && isArray(result) && result.length === 0;
	}());
	defineProperties(ArrayPrototype, {
		// Safari 5.0 bug where .splice() returns undefined
		splice: function splice(start, deleteCount) {
			if (arguments.length === 0) {
				return [];
			} else {
				return array_splice.apply(this, arguments);
			}
		}
	}, spliceNoopReturnsEmptyArray);

	var spliceWorksWithEmptyObject = (function () {
		var obj = {};
		ArrayPrototype.splice.call(obj, 0, 0, 1);
		return obj.length === 1;
	}());
	defineProperties(ArrayPrototype, {
		splice: function splice(start, deleteCount) {
			if (arguments.length === 0) { return []; }
			var args = arguments;
			this.length = Math.max(toInteger(this.length), 0);
			if (arguments.length > 0 && typeof deleteCount !== 'number') {
				args = array_slice.call(arguments);
				if (args.length < 2) {
					args.push(this.length - start);
				} else {
					args[1] = toInteger(deleteCount);
				}
			}
			return array_splice.apply(this, args);
		}
	}, !spliceWorksWithEmptyObject);

// ES5 15.4.4.12
// http://es5.github.com/#x15.4.4.13
// Return len+argCount.
// [bugfix, ielt8]
// IE < 8 bug: [].unshift(0) === undefined but should be "1"
	var hasUnshiftReturnValueBug = [].unshift(0) !== 1;
	defineProperties(ArrayPrototype, {
		unshift: function () {
			array_unshift.apply(this, arguments);
			return this.length;
		}
	}, hasUnshiftReturnValueBug);

// ES5 15.4.3.2
// http://es5.github.com/#x15.4.3.2
// https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/isArray
	defineProperties(Array, { isArray: isArray });

// The IsCallable() check in the Array functions
// has been replaced with a strict check on the
// internal class of the object to trap cases where
// the provided function was actually a regular
// expression literal, which in V8 and
// JavaScriptCore is a typeof "function".  Only in
// V8 are regular expression literals permitted as
// reduce parameters, so it is desirable in the
// general case for the shim to match the more
// strict and common behavior of rejecting regular
// expressions.

// ES5 15.4.4.18
// http://es5.github.com/#x15.4.4.18
// https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/array/forEach

// Check failure of by-index access of string characters (IE < 9)
// and failure of `0 in boxedString` (Rhino)
	var boxedString = Object("a");
	var splitString = boxedString[0] !== "a" || !(0 in boxedString);

	var properlyBoxesContext = function properlyBoxed(method) {
		// Check node 0.6.21 bug where third parameter is not boxed
		var properlyBoxesNonStrict = true;
		var properlyBoxesStrict = true;
		if (method) {
			method.call('foo', function (_, __, context) {
				if (typeof context !== 'object') { properlyBoxesNonStrict = false; }
			});

			method.call([1], function () {
				'use strict';
				properlyBoxesStrict = typeof this === 'string';
			}, 'x');
		}
		return !!method && properlyBoxesNonStrict && properlyBoxesStrict;
	};

	defineProperties(ArrayPrototype, {
		forEach: function forEach(fun /*, thisp*/) {
			var object = toObject(this),
				self = splitString && isString(this) ? this.split('') : object,
				thisp = arguments[1],
				i = -1,
				length = self.length >>> 0;

			// If no callback function or if callback is not a callable function
			if (!isFunction(fun)) {
				throw new TypeError(); // TODO message
			}

			while (++i < length) {
				if (i in self) {
					// Invoke the callback function with call, passing arguments:
					// context, property value, property key, thisArg object
					// context
					fun.call(thisp, self[i], i, object);
				}
			}
		}
	}, !properlyBoxesContext(ArrayPrototype.forEach));

// ES5 15.4.4.19
// http://es5.github.com/#x15.4.4.19
// https://developer.mozilla.org/en/Core_JavaScript_1.5_Reference/Objects/Array/map
	defineProperties(ArrayPrototype, {
		map: function map(fun /*, thisp*/) {
			var object = toObject(this),
				self = splitString && isString(this) ? this.split('') : object,
				length = self.length >>> 0,
				result = Array(length),
				thisp = arguments[1];

			// If no callback function or if callback is not a callable function
			if (!isFunction(fun)) {
				throw new TypeError(fun + " is not a function");
			}

			for (var i = 0; i < length; i++) {
				if (i in self) {
					result[i] = fun.call(thisp, self[i], i, object);
				}
			}
			return result;
		}
	}, !properlyBoxesContext(ArrayPrototype.map));

// ES5 15.4.4.20
// http://es5.github.com/#x15.4.4.20
// https://developer.mozilla.org/en/Core_JavaScript_1.5_Reference/Objects/Array/filter
	defineProperties(ArrayPrototype, {
		filter: function filter(fun /*, thisp */) {
			var object = toObject(this),
				self = splitString && isString(this) ? this.split('') : object,
				length = self.length >>> 0,
				result = [],
				value,
				thisp = arguments[1];

			// If no callback function or if callback is not a callable function
			if (!isFunction(fun)) {
				throw new TypeError(fun + " is not a function");
			}

			for (var i = 0; i < length; i++) {
				if (i in self) {
					value = self[i];
					if (fun.call(thisp, value, i, object)) {
						result.push(value);
					}
				}
			}
			return result;
		}
	}, !properlyBoxesContext(ArrayPrototype.filter));

// ES5 15.4.4.16
// http://es5.github.com/#x15.4.4.16
// https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/every
	defineProperties(ArrayPrototype, {
		every: function every(fun /*, thisp */) {
			var object = toObject(this),
				self = splitString && isString(this) ? this.split('') : object,
				length = self.length >>> 0,
				thisp = arguments[1];

			// If no callback function or if callback is not a callable function
			if (!isFunction(fun)) {
				throw new TypeError(fun + " is not a function");
			}

			for (var i = 0; i < length; i++) {
				if (i in self && !fun.call(thisp, self[i], i, object)) {
					return false;
				}
			}
			return true;
		}
	}, !properlyBoxesContext(ArrayPrototype.every));

// ES5 15.4.4.17
// http://es5.github.com/#x15.4.4.17
// https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/some
	defineProperties(ArrayPrototype, {
		some: function some(fun /*, thisp */) {
			var object = toObject(this),
				self = splitString && isString(this) ? this.split('') : object,
				length = self.length >>> 0,
				thisp = arguments[1];

			// If no callback function or if callback is not a callable function
			if (!isFunction(fun)) {
				throw new TypeError(fun + " is not a function");
			}

			for (var i = 0; i < length; i++) {
				if (i in self && fun.call(thisp, self[i], i, object)) {
					return true;
				}
			}
			return false;
		}
	}, !properlyBoxesContext(ArrayPrototype.some));

// ES5 15.4.4.21
// http://es5.github.com/#x15.4.4.21
// https://developer.mozilla.org/en/Core_JavaScript_1.5_Reference/Objects/Array/reduce
	var reduceCoercesToObject = false;
	if (ArrayPrototype.reduce) {
		reduceCoercesToObject = typeof ArrayPrototype.reduce.call('es5', function (_, __, ___, list) { return list; }) === 'object';
	}
	defineProperties(ArrayPrototype, {
		reduce: function reduce(fun /*, initial*/) {
			var object = toObject(this),
				self = splitString && isString(this) ? this.split('') : object,
				length = self.length >>> 0;

			// If no callback function or if callback is not a callable function
			if (!isFunction(fun)) {
				throw new TypeError(fun + " is not a function");
			}

			// no value to return if no initial value and an empty array
			if (!length && arguments.length === 1) {
				throw new TypeError("reduce of empty array with no initial value");
			}

			var i = 0;
			var result;
			if (arguments.length >= 2) {
				result = arguments[1];
			} else {
				do {
					if (i in self) {
						result = self[i++];
						break;
					}

					// if array contains no values, no initial value to return
					if (++i >= length) {
						throw new TypeError("reduce of empty array with no initial value");
					}
				} while (true);
			}

			for (; i < length; i++) {
				if (i in self) {
					result = fun.call(void 0, result, self[i], i, object);
				}
			}

			return result;
		}
	}, !reduceCoercesToObject);

// ES5 15.4.4.22
// http://es5.github.com/#x15.4.4.22
// https://developer.mozilla.org/en/Core_JavaScript_1.5_Reference/Objects/Array/reduceRight
	var reduceRightCoercesToObject = false;
	if (ArrayPrototype.reduceRight) {
		reduceRightCoercesToObject = typeof ArrayPrototype.reduceRight.call('es5', function (_, __, ___, list) { return list; }) === 'object';
	}
	defineProperties(ArrayPrototype, {
		reduceRight: function reduceRight(fun /*, initial*/) {
			var object = toObject(this),
				self = splitString && isString(this) ? this.split('') : object,
				length = self.length >>> 0;

			// If no callback function or if callback is not a callable function
			if (!isFunction(fun)) {
				throw new TypeError(fun + " is not a function");
			}

			// no value to return if no initial value, empty array
			if (!length && arguments.length === 1) {
				throw new TypeError("reduceRight of empty array with no initial value");
			}

			var result, i = length - 1;
			if (arguments.length >= 2) {
				result = arguments[1];
			} else {
				do {
					if (i in self) {
						result = self[i--];
						break;
					}

					// if array contains no values, no initial value to return
					if (--i < 0) {
						throw new TypeError("reduceRight of empty array with no initial value");
					}
				} while (true);
			}

			if (i < 0) {
				return result;
			}

			do {
				if (i in self) {
					result = fun.call(void 0, result, self[i], i, object);
				}
			} while (i--);

			return result;
		}
	}, !reduceRightCoercesToObject);

// ES5 15.4.4.14
// http://es5.github.com/#x15.4.4.14
// https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/indexOf
	var hasFirefox2IndexOfBug = Array.prototype.indexOf && [0, 1].indexOf(1, 2) !== -1;
	defineProperties(ArrayPrototype, {
		indexOf: function indexOf(sought /*, fromIndex */ ) {
			var self = splitString && isString(this) ? this.split('') : toObject(this),
				length = self.length >>> 0;

			if (!length) {
				return -1;
			}

			var i = 0;
			if (arguments.length > 1) {
				i = toInteger(arguments[1]);
			}

			// handle negative indices
			i = i >= 0 ? i : Math.max(0, length + i);
			for (; i < length; i++) {
				if (i in self && self[i] === sought) {
					return i;
				}
			}
			return -1;
		}
	}, hasFirefox2IndexOfBug);

// ES5 15.4.4.15
// http://es5.github.com/#x15.4.4.15
// https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/lastIndexOf
	var hasFirefox2LastIndexOfBug = Array.prototype.lastIndexOf && [0, 1].lastIndexOf(0, -3) !== -1;
	defineProperties(ArrayPrototype, {
		lastIndexOf: function lastIndexOf(sought /*, fromIndex */) {
			var self = splitString && isString(this) ? this.split('') : toObject(this),
				length = self.length >>> 0;

			if (!length) {
				return -1;
			}
			var i = length - 1;
			if (arguments.length > 1) {
				i = Math.min(i, toInteger(arguments[1]));
			}
			// handle negative indices
			i = i >= 0 ? i : length - Math.abs(i);
			for (; i >= 0; i--) {
				if (i in self && sought === self[i]) {
					return i;
				}
			}
			return -1;
		}
	}, hasFirefox2LastIndexOfBug);

//
// Object
// ======
//

// ES5 15.2.3.14
// http://es5.github.com/#x15.2.3.14

// http://whattheheadsaid.com/2010/10/a-safer-object-keys-compatibility-implementation
	var hasDontEnumBug = !({'toString': null}).propertyIsEnumerable('toString'),
		hasProtoEnumBug = (function () {}).propertyIsEnumerable('prototype'),
		dontEnums = [
			"toString",
			"toLocaleString",
			"valueOf",
			"hasOwnProperty",
			"isPrototypeOf",
			"propertyIsEnumerable",
			"constructor"
		],
		dontEnumsLength = dontEnums.length;

	defineProperties(Object, {
		keys: function keys(object) {
			var isFn = isFunction(object),
				isArgs = isArguments(object),
				isObject = object !== null && typeof object === 'object',
				isStr = isObject && isString(object);

			if (!isObject && !isFn && !isArgs) {
				throw new TypeError("Object.keys called on a non-object");
			}

			var theKeys = [];
			var skipProto = hasProtoEnumBug && isFn;
			if (isStr || isArgs) {
				for (var i = 0; i < object.length; ++i) {
					theKeys.push(String(i));
				}
			} else {
				for (var name in object) {
					if (!(skipProto && name === 'prototype') && owns(object, name)) {
						theKeys.push(String(name));
					}
				}
			}

			if (hasDontEnumBug) {
				var ctor = object.constructor,
					skipConstructor = ctor && ctor.prototype === object;
				for (var j = 0; j < dontEnumsLength; j++) {
					var dontEnum = dontEnums[j];
					if (!(skipConstructor && dontEnum === 'constructor') && owns(object, dontEnum)) {
						theKeys.push(dontEnum);
					}
				}
			}
			return theKeys;
		}
	});

	var keysWorksWithArguments = Object.keys && (function () {
			// Safari 5.0 bug
			return Object.keys(arguments).length === 2;
		}(1, 2));
	var originalKeys = Object.keys;
	defineProperties(Object, {
		keys: function keys(object) {
			if (isArguments(object)) {
				return originalKeys(ArrayPrototype.slice.call(object));
			} else {
				return originalKeys(object);
			}
		}
	}, !keysWorksWithArguments);

//
// Date
// ====
//

// ES5 15.9.5.43
// http://es5.github.com/#x15.9.5.43
// This function returns a String value represent the instance in time
// represented by this Date object. The format of the String is the Date Time
// string format defined in 15.9.1.15. All fields are present in the String.
// The time zone is always UTC, denoted by the suffix Z. If the time value of
// this object is not a finite Number a RangeError exception is thrown.
	var negativeDate = -62198755200000;
	var negativeYearString = "-000001";
	var hasNegativeDateBug = Date.prototype.toISOString && new Date(negativeDate).toISOString().indexOf(negativeYearString) === -1;

	defineProperties(Date.prototype, {
		toISOString: function toISOString() {
			var result, length, value, year, month;
			if (!isFinite(this)) {
				throw new RangeError("Date.prototype.toISOString called on non-finite value.");
			}

			year = this.getUTCFullYear();

			month = this.getUTCMonth();
			// see https://github.com/es-shims/es5-shim/issues/111
			year += Math.floor(month / 12);
			month = (month % 12 + 12) % 12;

			// the date time string format is specified in 15.9.1.15.
			result = [month + 1, this.getUTCDate(), this.getUTCHours(), this.getUTCMinutes(), this.getUTCSeconds()];
			year = (
			(year < 0 ? "-" : (year > 9999 ? "+" : "")) +
			("00000" + Math.abs(year)).slice(0 <= year && year <= 9999 ? -4 : -6)
			);

			length = result.length;
			while (length--) {
				value = result[length];
				// pad months, days, hours, minutes, and seconds to have two
				// digits.
				if (value < 10) {
					result[length] = "0" + value;
				}
			}
			// pad milliseconds to have three digits.
			return (
			year + "-" + result.slice(0, 2).join("-") +
			"T" + result.slice(2).join(":") + "." +
			("000" + this.getUTCMilliseconds()).slice(-3) + "Z"
			);
		}
	}, hasNegativeDateBug);


// ES5 15.9.5.44
// http://es5.github.com/#x15.9.5.44
// This function provides a String representation of a Date object for use by
// JSON.stringify (15.12.3).
	var dateToJSONIsSupported = false;
	try {
		dateToJSONIsSupported = (
		Date.prototype.toJSON &&
		new Date(NaN).toJSON() === null &&
		new Date(negativeDate).toJSON().indexOf(negativeYearString) !== -1 &&
		Date.prototype.toJSON.call({ // generic
			toISOString: function () {
				return true;
			}
		})
		);
	} catch (e) {
	}
	if (!dateToJSONIsSupported) {
		Date.prototype.toJSON = function toJSON(key) {
			// When the toJSON method is called with argument key, the following
			// steps are taken:

			// 1.  Let O be the result of calling ToObject, giving it the this
			// value as its argument.
			// 2. Let tv be toPrimitive(O, hint Number).
			var o = Object(this),
				tv = toPrimitive(o),
				toISO;
			// 3. If tv is a Number and is not finite, return null.
			if (typeof tv === "number" && !isFinite(tv)) {
				return null;
			}
			// 4. Let toISO be the result of calling the [[Get]] internal method of
			// O with argument "toISOString".
			toISO = o.toISOString;
			// 5. If IsCallable(toISO) is false, throw a TypeError exception.
			if (typeof toISO !== "function") {
				throw new TypeError("toISOString property is not callable");
			}
			// 6. Return the result of calling the [[Call]] internal method of
			//  toISO with O as the this value and an empty argument list.
			return toISO.call(o);

			// NOTE 1 The argument is ignored.

			// NOTE 2 The toJSON function is intentionally generic; it does not
			// require that its this value be a Date object. Therefore, it can be
			// transferred to other kinds of objects for use as a method. However,
			// it does require that any such object have a toISOString method. An
			// object is free to use the argument key to filter its
			// stringification.
		};
	}

// ES5 15.9.4.2
// http://es5.github.com/#x15.9.4.2
// based on work shared by Daniel Friesen (dantman)
// http://gist.github.com/303249
	var supportsExtendedYears = Date.parse('+033658-09-27T01:46:40.000Z') === 1e15;
	var acceptsInvalidDates = !isNaN(Date.parse('2012-04-04T24:00:00.500Z')) || !isNaN(Date.parse('2012-11-31T23:59:59.000Z'));
	var doesNotParseY2KNewYear = isNaN(Date.parse("2000-01-01T00:00:00.000Z"));
	if (!Date.parse || doesNotParseY2KNewYear || acceptsInvalidDates || !supportsExtendedYears) {
		// XXX global assignment won't work in embeddings that use
		// an alternate object for the context.
		Date = (function (NativeDate) {

			// Date.length === 7
			function Date(Y, M, D, h, m, s, ms) {
				var length = arguments.length;
				if (this instanceof NativeDate) {
					var date = length === 1 && String(Y) === Y ? // isString(Y)
						// We explicitly pass it through parse:
						new NativeDate(Date.parse(Y)) :
						// We have to manually make calls depending on argument
						// length here
						length >= 7 ? new NativeDate(Y, M, D, h, m, s, ms) :
							length >= 6 ? new NativeDate(Y, M, D, h, m, s) :
								length >= 5 ? new NativeDate(Y, M, D, h, m) :
									length >= 4 ? new NativeDate(Y, M, D, h) :
										length >= 3 ? new NativeDate(Y, M, D) :
											length >= 2 ? new NativeDate(Y, M) :
												length >= 1 ? new NativeDate(Y) :
													new NativeDate();
					// Prevent mixups with unfixed Date object
					date.constructor = Date;
					return date;
				}
				return NativeDate.apply(this, arguments);
			}

			// 15.9.1.15 Date Time String Format.
			var isoDateExpression = new RegExp("^" +
			"(\\d{4}|[\+\-]\\d{6})" + // four-digit year capture or sign +
									  // 6-digit extended year
			"(?:-(\\d{2})" + // optional month capture
			"(?:-(\\d{2})" + // optional day capture
			"(?:" + // capture hours:minutes:seconds.milliseconds
			"T(\\d{2})" + // hours capture
			":(\\d{2})" + // minutes capture
			"(?:" + // optional :seconds.milliseconds
			":(\\d{2})" + // seconds capture
			"(?:(\\.\\d{1,}))?" + // milliseconds capture
			")?" +
			"(" + // capture UTC offset component
			"Z|" + // UTC capture
			"(?:" + // offset specifier +/-hours:minutes
			"([-+])" + // sign capture
			"(\\d{2})" + // hours offset capture
			":(\\d{2})" + // minutes offset capture
			")" +
			")?)?)?)?" +
			"$");

			var months = [
				0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365
			];

			function dayFromMonth(year, month) {
				var t = month > 1 ? 1 : 0;
				return (
				months[month] +
				Math.floor((year - 1969 + t) / 4) -
				Math.floor((year - 1901 + t) / 100) +
				Math.floor((year - 1601 + t) / 400) +
				365 * (year - 1970)
				);
			}

			function toUTC(t) {
				return Number(new NativeDate(1970, 0, 1, 0, 0, 0, t));
			}

			// Copy any custom methods a 3rd party library may have added
			for (var key in NativeDate) {
				Date[key] = NativeDate[key];
			}

			// Copy "native" methods explicitly; they may be non-enumerable
			Date.now = NativeDate.now;
			Date.UTC = NativeDate.UTC;
			Date.prototype = NativeDate.prototype;
			Date.prototype.constructor = Date;

			// Upgrade Date.parse to handle simplified ISO 8601 strings
			Date.parse = function parse(string) {
				var match = isoDateExpression.exec(string);
				if (match) {
					// parse months, days, hours, minutes, seconds, and milliseconds
					// provide default values if necessary
					// parse the UTC offset component
					var year = Number(match[1]),
						month = Number(match[2] || 1) - 1,
						day = Number(match[3] || 1) - 1,
						hour = Number(match[4] || 0),
						minute = Number(match[5] || 0),
						second = Number(match[6] || 0),
						millisecond = Math.floor(Number(match[7] || 0) * 1000),
					// When time zone is missed, local offset should be used
					// (ES 5.1 bug)
					// see https://bugs.ecmascript.org/show_bug.cgi?id=112
						isLocalTime = Boolean(match[4] && !match[8]),
						signOffset = match[9] === "-" ? 1 : -1,
						hourOffset = Number(match[10] || 0),
						minuteOffset = Number(match[11] || 0),
						result;
					if (
						hour < (
							minute > 0 || second > 0 || millisecond > 0 ?
								24 : 25
						) &&
						minute < 60 && second < 60 && millisecond < 1000 &&
						month > -1 && month < 12 && hourOffset < 24 &&
						minuteOffset < 60 && // detect invalid offsets
						day > -1 &&
						day < (
						dayFromMonth(year, month + 1) -
						dayFromMonth(year, month)
						)
					) {
						result = (
						(dayFromMonth(year, month) + day) * 24 +
						hour +
						hourOffset * signOffset
						) * 60;
						result = (
						(result + minute + minuteOffset * signOffset) * 60 +
						second
						) * 1000 + millisecond;
						if (isLocalTime) {
							result = toUTC(result);
						}
						if (-8.64e15 <= result && result <= 8.64e15) {
							return result;
						}
					}
					return NaN;
				}
				return NativeDate.parse.apply(this, arguments);
			};

			return Date;
		})(Date);
	}

// ES5 15.9.4.4
// http://es5.github.com/#x15.9.4.4
	if (!Date.now) {
		Date.now = function now() {
			return new Date().getTime();
		};
	}


//
// Number
// ======
//

// ES5.1 15.7.4.5
// http://es5.github.com/#x15.7.4.5
	var hasToFixedBugs = NumberPrototype.toFixed && (
		(0.00008).toFixed(3) !== '0.000'
		|| (0.9).toFixed(0) !== '1'
		|| (1.255).toFixed(2) !== '1.25'
		|| (1000000000000000128).toFixed(0) !== "1000000000000000128"
		);

	var toFixedHelpers = {
		base: 1e7,
		size: 6,
		data: [0, 0, 0, 0, 0, 0],
		multiply: function multiply(n, c) {
			var i = -1;
			while (++i < toFixedHelpers.size) {
				c += n * toFixedHelpers.data[i];
				toFixedHelpers.data[i] = c % toFixedHelpers.base;
				c = Math.floor(c / toFixedHelpers.base);
			}
		},
		divide: function divide(n) {
			var i = toFixedHelpers.size, c = 0;
			while (--i >= 0) {
				c += toFixedHelpers.data[i];
				toFixedHelpers.data[i] = Math.floor(c / n);
				c = (c % n) * toFixedHelpers.base;
			}
		},
		numToString: function numToString() {
			var i = toFixedHelpers.size;
			var s = '';
			while (--i >= 0) {
				if (s !== '' || i === 0 || toFixedHelpers.data[i] !== 0) {
					var t = String(toFixedHelpers.data[i]);
					if (s === '') {
						s = t;
					} else {
						s += '0000000'.slice(0, 7 - t.length) + t;
					}
				}
			}
			return s;
		},
		pow: function pow(x, n, acc) {
			return (n === 0 ? acc : (n % 2 === 1 ? pow(x, n - 1, acc * x) : pow(x * x, n / 2, acc)));
		},
		log: function log(x) {
			var n = 0;
			while (x >= 4096) {
				n += 12;
				x /= 4096;
			}
			while (x >= 2) {
				n += 1;
				x /= 2;
			}
			return n;
		}
	};

	defineProperties(NumberPrototype, {
		toFixed: function toFixed(fractionDigits) {
			var f, x, s, m, e, z, j, k;

			// Test for NaN and round fractionDigits down
			f = Number(fractionDigits);
			f = f !== f ? 0 : Math.floor(f);

			if (f < 0 || f > 20) {
				throw new RangeError("Number.toFixed called with invalid number of decimals");
			}

			x = Number(this);

			// Test for NaN
			if (x !== x) {
				return "NaN";
			}

			// If it is too big or small, return the string value of the number
			if (x <= -1e21 || x >= 1e21) {
				return String(x);
			}

			s = "";

			if (x < 0) {
				s = "-";
				x = -x;
			}

			m = "0";

			if (x > 1e-21) {
				// 1e-21 < x < 1e21
				// -70 < log2(x) < 70
				e = toFixedHelpers.log(x * toFixedHelpers.pow(2, 69, 1)) - 69;
				z = (e < 0 ? x * toFixedHelpers.pow(2, -e, 1) : x / toFixedHelpers.pow(2, e, 1));
				z *= 0x10000000000000; // Math.pow(2, 52);
				e = 52 - e;

				// -18 < e < 122
				// x = z / 2 ^ e
				if (e > 0) {
					toFixedHelpers.multiply(0, z);
					j = f;

					while (j >= 7) {
						toFixedHelpers.multiply(1e7, 0);
						j -= 7;
					}

					toFixedHelpers.multiply(toFixedHelpers.pow(10, j, 1), 0);
					j = e - 1;

					while (j >= 23) {
						toFixedHelpers.divide(1 << 23);
						j -= 23;
					}

					toFixedHelpers.divide(1 << j);
					toFixedHelpers.multiply(1, 1);
					toFixedHelpers.divide(2);
					m = toFixedHelpers.numToString();
				} else {
					toFixedHelpers.multiply(0, z);
					toFixedHelpers.multiply(1 << (-e), 0);
					m = toFixedHelpers.numToString() + '0.00000000000000000000'.slice(2, 2 + f);
				}
			}

			if (f > 0) {
				k = m.length;

				if (k <= f) {
					m = s + '0.0000000000000000000'.slice(0, f - k + 2) + m;
				} else {
					m = s + m.slice(0, k - f) + '.' + m.slice(k - f);
				}
			} else {
				m = s + m;
			}

			return m;
		}
	}, hasToFixedBugs);


//
// String
// ======
//

// ES5 15.5.4.14
// http://es5.github.com/#x15.5.4.14

// [bugfix, IE lt 9, firefox 4, Konqueror, Opera, obscure browsers]
// Many browsers do not split properly with regular expressions or they
// do not perform the split correctly under obscure conditions.
// See http://blog.stevenlevithan.com/archives/cross-browser-split
// I've tested in many browsers and this seems to cover the deviant ones:
//    'ab'.split(/(?:ab)*/) should be ["", ""], not [""]
//    '.'.split(/(.?)(.?)/) should be ["", ".", "", ""], not ["", ""]
//    'tesst'.split(/(s)*/) should be ["t", undefined, "e", "s", "t"], not
//       [undefined, "t", undefined, "e", ...]
//    ''.split(/.?/) should be [], not [""]
//    '.'.split(/()()/) should be ["."], not ["", "", "."]

	var string_split = StringPrototype.split;
	if (
		'ab'.split(/(?:ab)*/).length !== 2 ||
		'.'.split(/(.?)(.?)/).length !== 4 ||
		'tesst'.split(/(s)*/)[1] === "t" ||
		'test'.split(/(?:)/, -1).length !== 4 ||
		''.split(/.?/).length ||
		'.'.split(/()()/).length > 1
	) {
		(function () {
			var compliantExecNpcg = /()??/.exec("")[1] === void 0; // NPCG: nonparticipating capturing group

			StringPrototype.split = function (separator, limit) {
				var string = this;
				if (separator === void 0 && limit === 0) {
					return [];
				}

				// If `separator` is not a regex, use native split
				if (_toString.call(separator) !== "[object RegExp]") {
					return string_split.call(this, separator, limit);
				}

				var output = [],
					flags = (separator.ignoreCase ? "i" : "") +
						(separator.multiline  ? "m" : "") +
						(separator.extended   ? "x" : "") + // Proposed for ES6
						(separator.sticky     ? "y" : ""), // Firefox 3+
					lastLastIndex = 0,
				// Make `global` and avoid `lastIndex` issues by working with a copy
					separator2, match, lastIndex, lastLength;
				separator = new RegExp(separator.source, flags + "g");
				string += ""; // Type-convert
				if (!compliantExecNpcg) {
					// Doesn't need flags gy, but they don't hurt
					separator2 = new RegExp("^" + separator.source + "$(?!\\s)", flags);
				}
				/* Values for `limit`, per the spec:
				 * If undefined: 4294967295 // Math.pow(2, 32) - 1
				 * If 0, Infinity, or NaN: 0
				 * If positive number: limit = Math.floor(limit); if (limit > 4294967295) limit -= 4294967296;
				 * If negative number: 4294967296 - Math.floor(Math.abs(limit))
				 * If other: Type-convert, then use the above rules
				 */
				limit = limit === void 0 ?
				-1 >>> 0 : // Math.pow(2, 32) - 1
					ToUint32(limit);
				while (match = separator.exec(string)) {
					// `separator.lastIndex` is not reliable cross-browser
					lastIndex = match.index + match[0].length;
					if (lastIndex > lastLastIndex) {
						output.push(string.slice(lastLastIndex, match.index));
						// Fix browsers whose `exec` methods don't consistently return `undefined` for
						// nonparticipating capturing groups
						if (!compliantExecNpcg && match.length > 1) {
							match[0].replace(separator2, function () {
								for (var i = 1; i < arguments.length - 2; i++) {
									if (arguments[i] === void 0) {
										match[i] = void 0;
									}
								}
							});
						}
						if (match.length > 1 && match.index < string.length) {
							ArrayPrototype.push.apply(output, match.slice(1));
						}
						lastLength = match[0].length;
						lastLastIndex = lastIndex;
						if (output.length >= limit) {
							break;
						}
					}
					if (separator.lastIndex === match.index) {
						separator.lastIndex++; // Avoid an infinite loop
					}
				}
				if (lastLastIndex === string.length) {
					if (lastLength || !separator.test("")) {
						output.push("");
					}
				} else {
					output.push(string.slice(lastLastIndex));
				}
				return output.length > limit ? output.slice(0, limit) : output;
			};
		}());

// [bugfix, chrome]
// If separator is undefined, then the result array contains just one String,
// which is the this value (converted to a String). If limit is not undefined,
// then the output array is truncated so that it contains no more than limit
// elements.
// "0".split(undefined, 0) -> []
	} else if ("0".split(void 0, 0).length) {
		StringPrototype.split = function split(separator, limit) {
			if (separator === void 0 && limit === 0) { return []; }
			return string_split.call(this, separator, limit);
		};
	}

	var str_replace = StringPrototype.replace;
	var replaceReportsGroupsCorrectly = (function () {
		var groups = [];
		'x'.replace(/x(.)?/g, function (match, group) {
			groups.push(group);
		});
		return groups.length === 1 && typeof groups[0] === 'undefined';
	}());

	if (!replaceReportsGroupsCorrectly) {
		StringPrototype.replace = function replace(searchValue, replaceValue) {
			var isFn = isFunction(replaceValue);
			var hasCapturingGroups = isRegex(searchValue) && (/\)[*?]/).test(searchValue.source);
			if (!isFn || !hasCapturingGroups) {
				return str_replace.call(this, searchValue, replaceValue);
			} else {
				var wrappedReplaceValue = function (match) {
					var length = arguments.length;
					var originalLastIndex = searchValue.lastIndex;
					searchValue.lastIndex = 0;
					var args = searchValue.exec(match);
					searchValue.lastIndex = originalLastIndex;
					args.push(arguments[length - 2], arguments[length - 1]);
					return replaceValue.apply(this, args);
				};
				return str_replace.call(this, searchValue, wrappedReplaceValue);
			}
		};
	}

// ECMA-262, 3rd B.2.3
// Not an ECMAScript standard, although ECMAScript 3rd Edition has a
// non-normative section suggesting uniform semantics and it should be
// normalized across all browsers
// [bugfix, IE lt 9] IE < 9 substr() with negative value not working in IE
	var string_substr = StringPrototype.substr;
	var hasNegativeSubstrBug = "".substr && "0b".substr(-1) !== "b";
	defineProperties(StringPrototype, {
		substr: function substr(start, length) {
			return string_substr.call(
				this,
				start < 0 ? ((start = this.length + start) < 0 ? 0 : start) : start,
				length
			);
		}
	}, hasNegativeSubstrBug);

// ES5 15.5.4.20
// whitespace from: http://es5.github.io/#x15.5.4.20
	var ws = "\x09\x0A\x0B\x0C\x0D\x20\xA0\u1680\u180E\u2000\u2001\u2002\u2003" +
		"\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000\u2028" +
		"\u2029\uFEFF";
	var zeroWidth = '\u200b';
	var wsRegexChars = "[" + ws + "]";
	var trimBeginRegexp = new RegExp("^" + wsRegexChars + wsRegexChars + "*");
	var trimEndRegexp = new RegExp(wsRegexChars + wsRegexChars + "*$");
	var hasTrimWhitespaceBug = StringPrototype.trim && (ws.trim() || !zeroWidth.trim());
	defineProperties(StringPrototype, {
		// http://blog.stevenlevithan.com/archives/faster-trim-javascript
		// http://perfectionkills.com/whitespace-deviations/
		trim: function trim() {
			if (this === void 0 || this === null) {
				throw new TypeError("can't convert " + this + " to object");
			}
			return String(this).replace(trimBeginRegexp, "").replace(trimEndRegexp, "");
		}
	}, hasTrimWhitespaceBug);

// ES-5 15.1.2.2
	if (parseInt(ws + '08') !== 8 || parseInt(ws + '0x16') !== 22) {
		parseInt = (function (origParseInt) {
			var hexRegex = /^0[xX]/;
			return function parseIntES5(str, radix) {
				str = String(str).trim();
				if (!Number(radix)) {
					radix = hexRegex.test(str) ? 16 : 10;
				}
				return origParseInt(str, radix);
			};
		}(parseInt));
	}

})();




(function($, shims){
	var defineProperty = 'defineProperty';
	var advancedObjectProperties = !!(Object.create && Object.defineProperties && Object.getOwnPropertyDescriptor);
	//safari5 has defineProperty-interface, but it can't be used on dom-object
	//only do this test in non-IE browsers, because this hurts dhtml-behavior in some IE8 versions
	if (advancedObjectProperties && Object[defineProperty] && Object.prototype.__defineGetter__) {
		(function(){
			try {
				var foo = document.createElement('foo');
				Object[defineProperty](foo, 'bar', {
					get: function(){
						return true;
					}
				});
				advancedObjectProperties = !!foo.bar;
			} 
			catch (e) {
				advancedObjectProperties = false;
			}
			foo = null;
		})();
	}
	var support = webshims.support;
	support.objectAccessor = !!((advancedObjectProperties || (Object.prototype.__defineGetter__ && Object.prototype.__lookupSetter__)));
	support.advancedObjectProperties = advancedObjectProperties;
	
if((!advancedObjectProperties || !Object.create || !Object.defineProperties || !Object.getOwnPropertyDescriptor  || !Object.defineProperty)){
	var call = Function.prototype.call;
	var prototypeOfObject = Object.prototype;
	var owns = call.bind(prototypeOfObject.hasOwnProperty);
	
	shims.objectCreate = function(proto, props, opts, no__proto__){
		var o;
		var f = function(){};
		
		f.prototype = proto;
		o = new f();
		
		if(!no__proto__ && !('__proto__' in o) && !support.objectAccessor){
			o.__proto__ = proto;
		}
		
		if(props){
			shims.defineProperties(o, props);
		}
		
		if(opts){
			o.options = $.extend(true, {}, o.options || {}, opts);
			opts = o.options;
		}
		
		if(o._create && $.isFunction(o._create)){
			o._create(opts);
		}
		return o;
	};
	
	shims.defineProperties = function(object, props){
		for (var name in props) {
			if (owns(props, name)) {
				shims.defineProperty(object, name, props[name]);
			}
		}
		return object;
	};
	
	var descProps = ['configurable', 'enumerable', 'writable'];
	shims.defineProperty = function(proto, property, descriptor){
		if(typeof descriptor != "object" || descriptor === null){return proto;}
		if(Object.defineProperty){
			try { return Object.defineProperty(proto, property, descriptor); } catch (e) {}
		}
		if(owns(descriptor, "value")){
			proto[property] = descriptor.value;
			return proto;
		}
		
		if(proto.__defineGetter__){
            if (typeof descriptor.get == "function") {
				proto.__defineGetter__(property, descriptor.get);
			}
            if (typeof descriptor.set == "function"){
                proto.__defineSetter__(property, descriptor.set);
			}
        }
		return proto;
	};
	
	shims.getPrototypeOf = function (object) {
        return Object.getPrototypeOf && Object.getPrototypeOf(object) || object.__proto__ || object.constructor && object.constructor.prototype;
    };
	
	//based on http://www.refactory.org/s/object_getownpropertydescriptor/view/latest 
	shims.getOwnPropertyDescriptor = function(obj, prop){
		if (typeof obj !== "object" && typeof obj !== "function" || obj === null){
            throw new TypeError("Object.getOwnPropertyDescriptor called on a non-object");
		}
		var descriptor;
		if(Object.defineProperty && Object.getOwnPropertyDescriptor){
			try{
				descriptor = Object.getOwnPropertyDescriptor(obj, prop);
				return descriptor;
			} catch(e){}
		}
        descriptor = {
            configurable: true,
            enumerable: true,
            writable: true,
            value: undefined
        };
		var getter = obj.__lookupGetter__ && obj.__lookupGetter__(prop), 
			setter = obj.__lookupSetter__ && obj.__lookupSetter__(prop)
		;
        
        if (!getter && !setter) { // not an accessor so return prop
        	if(!owns(obj, prop)){
				return;
			}
            descriptor.value = obj[prop];
            return descriptor;
        }
        
        // there is an accessor, remove descriptor.writable; populate descriptor.get and descriptor.set
        delete descriptor.writable;
        delete descriptor.value;
        descriptor.get = descriptor.set = undefined;
        
        if(getter){
			descriptor.get = getter;
		}
        
        if(setter){
            descriptor.set = setter;
		}
        
        return descriptor;
    };

}
webshims.isReady('es5', true);
})(webshims.$, webshims);


